The SFC EMU v1.6 source code has been released and BassAceGold has made some unofficial changes to the emulator.

Changelog:

• Added the ability to disable or enable audio
• Added cpu speed 5 which is only slightly faster than cpu speed 4, but its there for people who may think it'll help
• Attempted to reduce freezing of entering the emulator menu from in game (haven't tested to see if it works)

Installation Notes:

If you have a previous version of the emulator on your card, you just need to copy the .plg, If you are doing a fresh install then delete the NDSSFC.CFG file after copying everything over.


Download
Source- Supercard